A) A sample of solid copper is heated with an electrical coil. If 72.4 Joules of...

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Chemistry

A) A sample of solid copper is heated with an electrical coil.If 72.4 Joules of energy are added to a 11.4 gram sample and thefinal temperature is 38.3Â°C, what is the initial temperature of thecopper? Answer:_____________ Â°C.
B)When NO(g) reacts withH₂(g) to formN₂(g) andH₂O(l) , 376 kJ ofenergy are evolved for each mole ofNO(g) that reacts.

Write a balanced thermochemical equation for the reaction with anenergy term in kJ as part of the equation. Note that the answer boxfor the energy term is case sensitive.

Use the SMALLEST INTEGER coefficients possible and put theenergy term (including the units) in an appropriate box. If a boxis not needed, leave it blank.
+_+_->__+_+____

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4.4 Ratings (791 Votes)

1For copper metal Specific heat at constant pressure Cp 039 kJKg1K1 039 x 103 JKg1K1 390 JKg1K1 Heat energy supplied H 724 J Mass of copper 114 g 114 x 103 Kg 114 x 102 Kg Final temperature Tf 383 0C 383 27315 31145 K See Answer

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